Merge 32c2f49bec into ddd128bcca

README.md

@@ -1,6 +1,6 @@
 # XenonRecomp
 
-XenonRecomp is a tool that converts Xbox 360 executables into C++ code, which can then be recompiled for any platform. Currently, it only supports x86 platforms due to the use of x86 intrinsics.
+XenonRecomp is a tool that converts Xbox 360 executables into C++ code, which can then be recompiled for any platform.
 
 This project was heavily inspired by [N64: Recompiled](https://github.com/N64Recomp/N64Recomp), a similar tool for N64 executables.
 
@@ -20,7 +20,7 @@ Vector registers' endianness handling is more complicated. Instead of swapping i
 
 The FPU expects denormalized numbers to remain unmodified, while VMX instructions always flush them. This is managed by storing the current floating-point state in the CPU state struct and enabling or disabling denormal flushing as necessary before executing each instruction.
 
-Most VMX instructions are implemented using x86 intrinsics. Luckily, the number of AVX intrinsics used is relatively low, so adding support for other architectures using libraries like [SIMD Everywhere](https://github.com/simd-everywhere/simde) might be possible.
+Most VMX instructions are implemented using x86 intrinsics. Support for ARM64 is implemented using [SIMD Everywhere](https://github.com/simd-everywhere/simde).
 
 ### MMIO
 

XenonUtils/byteswap.h

@@ -2,17 +2,30 @@
 
 #include <cassert>
 
+#if defined(_MSC_VER)  // MSVC
+#include <intrin.h>
+#define BSWAP16(x) _byteswap_ushort(x)
+#define BSWAP32(x) _byteswap_ulong(x)
+#define BSWAP64(x) _byteswap_uint64(x)
+#elif defined(__GNUC__) || defined(__clang__)  // GCC or Clang
+#define BSWAP16(x) __builtin_bswap16(x)
+#define BSWAP32(x) __builtin_bswap32(x)
+#define BSWAP64(x) __builtin_bswap64(x)
+#else
+#error "Unsupported compiler"
+#endif
+
 template<typename T>
 inline T ByteSwap(T value)
 {
     if constexpr (sizeof(T) == 1)
         return value;
     else if constexpr (sizeof(T) == 2)
-        return static_cast<T>(__builtin_bswap16(static_cast<uint16_t>(value)));
+        return static_cast<T>(BSWAP16(static_cast<uint16_t>(value)));
     else if constexpr (sizeof(T) == 4)
-        return static_cast<T>(__builtin_bswap32(static_cast<uint32_t>(value)));
+        return static_cast<T>(BSWAP32(static_cast<uint32_t>(value)));
     else if constexpr (sizeof(T) == 8)
-        return static_cast<T>(__builtin_bswap64(static_cast<uint64_t>(value)));
+        return static_cast<T>(BSWAP64(static_cast<uint64_t>(value)));
 
     assert(false && "Unexpected byte size.");
     return value;